Coffee or tea percolator.



PATENTED FEB. 4,` 1908.

` P. GEISSLER. COFFEE 0R TEA PERGOLAIOR APPLICATION FILED JUNE 15, 1906.

` m: Name/s rrrsks ce.. wAsmNcroN. n. c.

FRIEDRICH GEISSLER, OF KLOTZSCHE, NEAR DRESDEN, GERMANY.

COFFEE OR TEA PERCOLATOR.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application 'le'l June 15. 1906. Serial No 321829.

T 0 all whom it may concern:

Be it known that I, FRIEDRICH GEIssLmz, a subject of the King of Saxony,residing in Klotzsche, near Dresden, Germany, have invented a certainnew and useful Coffee or Tea Percolator, of which the following is aspecification.

Percolators are well known in which hot water is poured through thelarge opening of the percolator vessel on to the coil'ee arranged on thesieve at the bottom portion of the percolator, so that during thepouring of the water, a large portion of the aromatic coffee vaporswhich are at once produced, escapes with the steam. This loss as theprocess continues becomes still greater because in the cover of theso-called coffee machines a hole is arranged for the escape of steam.

The present invention relates to a percolator by means of which thevapors produced are kept back as completely as possible and made tocombine again with the drink.

The invention consists in a percolator Ihaving the opening for theintroduction of the sieve and the material to be infused, as Well as forcleaning, closed by a cover having a deep rim fitting down in the bodyoi| the percolator, the infusing liquid being introduced through anarrow branch preferably having a funnel shaped head that can be closed.The cover constitutes a gas bell which is free to rise and fall with thevariations in,internal pressure, so that the vapors formed in thepercolator when pouring in the infusing liquid, which vapors are rich inaromatic substances, in their tendency to expand do not meet anyobstacle.

At the beginning of the pouring on of hot water, when a considerableamount of vapor is formed, the hot water 'filling the percolator andalso the space between the cover and the wall of the percolator, forms asteam tight seal.

IVhen the liquid sinks, the cover which has been raised by the steamwill also sink, owing to the condensation of the said steam. After theliquid has sunk to such an extent that it no longer forms a seal betweenthe wall of the vessel and the rim of the cover, only a very smallquantity of steam can escape through the narrow slot between the twoWalls, so that a loss of aromatic sub- 'stances is avoided.

The condensation of steam continues therefore quietly and thus thearomatic substances contained in the steam in the gas holder-likechamber of the percolator are recovered.

In the drawing Figs. 1 and 2 show two constructions according to thisinvention.

The percolator a is provided in a well known manner with a flange a tohold it on the coffee pot proper, with a bottom sieve c and a top sieved. It is also provided, according to Fig. 1, opposite the handle h, witha tubular branch f entering the percolator adjacent to the top sieve d.This tubular branch is provided with a funnel shaped head e, which canbe closed by a cover g. The large opening of the funnel a is maintainedclosed by means of a cover having the shape of a gas-holder bell andprovided with a rim, the lower edge of which is about level with themouth of the branch f As shown in Fig. 2, the branch j" with thefunnel-shaped head e for pouring in hot water, is arranged in the coverof the vessel For the purpose of forming a water seal, it is extendeddown to the bottom portion of the vessel.

I-Iot water introduced through the branch f or f collects at iirst overthe material to be infused, and forms a seal between the rim of thecover and the wall of the percolator. As the cover of the branch isclosed immediately after pouring in water, the steam produced,containing large quantities of aromatic substances, raises the cover.

I/Vhcn the liquid descends, owing to the steam beginning to condense,the cover also descends, but the joint still remains closed by a waterseal. Only when the liquid in the percolator sinks very low and after ithas passed completely through the material to e infused, the water sealis destroyed, but the narrow slot between the rim of the cover and thewall of the percolator enables only a very small quantity of steam toescape so that complete condensation of all the steam and recovery ofthe aromatic substances in it are insured.

/Vliat I claim as my invention and desire to secure by .Letters Patentis 1. In a coffee or tea percolator, the combi nation with a receptacleopen at the top and having a holder for the material to be treated atthe bottom thereof, of a cover'for closing the receptacle having a deeprim extending down into the receptacle with a clearance space betweensaid rim and wall of the receptacle, said cover being free to rise andfall l with the variations in internal ressure and a llng branch for theinfusing qud opening into the pereolator below the lower edge of thecover, the liquid forming Aa seal between the rim of the cover and wallof the percolator.

2. In a coffee or tea pereolator and in eombinaton a receptacle having alarge top opening a cover for said opening with a deep rim extendingdown into said receptacle, a elearl ance space between said rim and thesides of said receptacle, a sieve forming the bottom of said receptacle,a tubular branch of small diameter arranged to one side of saidreceptaele and opening into said receptacle adjacent 15 to the upperSurface of said sieve, a funnel- Y shaped top to said tubular branch anda cover for said top.

In testimony whereof I have signed my name to this specification in thepresence of 20 two subscribing witnesses.

.FRIEDRICH GEISSLER.

Witnesses:

OTTO WOLF, RICHARD YssERTE.

